2Y8N:
reference: Structural basis for a kolbe-type decarboxylation catalyzed by a glycyl radical enzyme., Martins BM, Blaser M, Feliks M, Ullmann GM, Buckel W, Selmer T, J Am Chem Soc. 2011 Sep 21;133(37):14666-74. Epub 2011 Aug 26. PMID: 21823587

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).